Stop motion for yarn-winding machines



Aug. 10,1926. 1,595,305 J. J. CANNON STOP MOTION FOR YARN WINDING MACHINES Filed Nov. 5. 1923 4 Sheets-Sheet l Aug; 10 1926. 1,595,705

Aug. 10, 1926. 1,595,705-

J. J. CANNON STOP MOTION FOR YARN WINDING MACHINES Filed Nov. 3, 1923 4 Sheets-Sheet 3 Aug. 10 1926.

., J. J. CANNON STOR MOTION FOR YARN WINDING MACHINES 4 Sheets-Sheet 4 1 Filed Nov,

Ji Jam/r Jana/U,

1 Arranged above the disc but normally clear spring 'and brings its cam or rounded extremity into contact with the face of the disc thereby raising the -latter from the driving wheel and forcing it into contact with the; brake pad or block; The detent is so arranged and its end is-so shaped that' upon contact of the said end with the'disc, the

rotation of the latter will assist the de'tent,

fin its movement thereby tending-to produce "awedging eftect oi the disc between theend of; the detent on the one side and the brake pad on the other side as shown in Figure? Thisefl'ect speedily" arrests the rotation of the disc and, the detent isheldin the forwardposition bythe spring 0 ,keep the disc clear of the drivin wheel. i V 1 In order that the bobbin may be stopped by hand when required a second detent may be provided having a' handle extending therefrom. The second. detent is operated from the first detent by a lateral projection which passes behind the second detent. "Alternatively the second detent maybe dispensed with and 'a handle 16, pivotally mounted on-the fixed bracket 6 on a stud or I screw 17, is provided having a plate or catch 18 attached thereto whichis arranged to operate on a'cam or rounded projection 19 formed onthe lever 10. When the lever is pu hed'away from the operator the'catch 18' engages the rounded projection and rides over same, thus forcing the lever downwards until the tooth 1O thereon clears the projection on the de-tent,-when'the spring 9 open sites the said detent as above described and as illustrated in Figure 3, Upon the reverse movement of the handle taking place the other end-of the atchlSengages the detent and pushes it back clear of the friction disc until. the tooth on the lever 10 again engages the projection onthe detent as shown in Figure-1 when the bobbin will again revolve.

lhe yarn 20 passes from the hanh'21 round a guide 22 and then over another guide 23 carried by a pivotedarm 24. This arm has fast upon its axle 25 or someother convenientvpartthereof a, noseor ca-in26 upon whichwaspring blade 27 bears; I and springblade are arrangedso that when theyarn is running over the guide at nor.-

mal.tension'thespring will support the arm (Figure 1) and allow a certain amount of resilientmoveinent so that ill acts asfia take upi'to. compensate for slight variations in the yarnptension. "When however,- owing to a drag on the yarn the tension of the latteris increased. abnormally-so as to move the arm heyondzxits predetermined limit, the 7 said The nose movement brings the other side oi the nose or cam onto the SPZ'IBO blade with the" result that the latter acts to depress instead of", '7

support the arm (Figure i) which thereupon bymeans of a connecting rod 28'moves the lost .n otion before moving the lever in'order that I the previously mentioned resilient ncrement of the arm can take place undernormal running of the yarn withoutput-ting the automatic braking means into action.

This lost motion is brought about by means of a collar SQon the rod, wlnchfengages alfurther rod Sl attached to the lever 19, said collarbeing adjustableon the'rod and fixed in any predetermined position as shown in Figure l. 1 I

Tilhefdetent 7 is preferably adjustable vertically "to varythe pressure applied to the friction disc, and tothis end it is mounted on an eccentric bush 32 (Figure 5) having milled ec ge flange for easy'adjustment by hand. i

TO 7 beforementioned llevercto release the detent; V r

The aforesaid springblade JQY mayhave i Z arranged, in f connection therewith a knot plate by wlnchmeans theibobbln isestopped when a knotzoccurs in the yarn, A convenient i'ormthereof isillustrated in Figures 6 and"! wherein said spring blade, instead I of beinganchored at itslower end as before, is tree, and so constructed to engage 34: fast on'an; axle 35 upon whichthe knot plate consisting 01 two fingers 36 and 37 arranged in close proximity to each otheris slidably mounted. The SEtlClfl-Xl is :tor-a certain. partof its length, of square section andthe plates 36 and v37 are adapted to slide on'said square portion in order tofollow the yarn as it moves from side to side of the hank. i Nor nallythe cam' 3etfapplies a tension to the 'bladeispring, but upon a knot striking the'knot plate,said plate is moved in,the', directionj of the i. arrow in nd thus turns thecain-"in'the direction of, the anew y, the blade spring then, byrreason oi"- the said tension, helping in this movementuntil the various parts take up theposition-shown by the dotted lines in Figure 6 when the arm 24c is released and falls thusoperating ice theconnections hereinbetoredescribed to release the detent.

It should be notedlithat the knot detector The tnsion of the blade spri ig adjusted by means of a screw or 'stud238 and a wing nut 39 shown in Figures 1 and 6.

The details of construction may be varied without departing from the scope of the invention.

lVhatI claim then is v 1. In ayarn winding machine of the type wherein a vertical bobbin spindle is rotated by the contact of a disc thereon with a driving wheel, a stop motion mechanism comprisingbiaking means which operate automatically to disengage said disc from the wheel and arrest rotation of same to stop the bobbin, a lever to normally hold said braking means out or" action, amember controlled by the yarn, and afconnection between said member and lever whereby, upon abnormal yarn tension, the latter is actuated to allow the braking means to become oper ative, said means thereupon opera-ting independently of the lever and yarn controlled member.

2. In a yarn winding machine of the type wherein, a vertical bobbinspindle is rotated by the contact of a disc thereon with a driving wheel, a stop motion mechanism comprising braking means for acting automatically upon said disc to disengage it from: the driving wheel and arrest its rotation, means to hold said braking means in a normally inoperative position, devices subject to movement under the influence of the running yarn, and connections between said devices and the said holding means whereby the braking means are released for operation when abnormal conditions in the yarn occur.

3. In a yarn winding machine of the type wherein a vertical bobbin spindle is rotated by the contact of a disc thereon with a driving wheel, a stop motion mechanism comprising a brake pad, a pivoted de'tent to engage the said disc and move it from the driving wheel and into contact with said brake pad, a spring to operate said detent, means to hold the detent in an inoperative position, and yarn actuated connections to move said means to release the detent.

In a yarn winding machine of the type wherein a vertical bobbin spindle is rotated by the contact of a disc thereon withadriving wheel, a stop motion mechanism comprising a brake pad located onone side of said disc, a pivoted detent located on the other side of said disc, a spring to actuate said detent whereby it moves the disc from contact with the driving wheel into engagement with the brake pad to arrest rotation of the spindle, a lever to hold the detent in a set position clear of the disc, and yarn actuated connections to actuate said lever to release the detent. I

5. In a ya rn winding machine or" the type wherein" avertical bobbin spindle is rotated by the contact of a disc thereon with a driving wheel, a stop motion mechanism comprising automatically acting braking means for arresting rotation of tne spindle, a lever normally controlling and adapted to allow said braking means to become operative, a spring controlled arm subject to the influence of the running yarn,

and connections between said arm'and lever v whereby when said arm is moved by undue tension on the yarn the lever is actuated to allow the braking means to act.

6. Ina yarn windi machine of the type wherein a vertical bobbin spindle is rotated by tric'ional driving means, a stop motion mechanism comprising automatically acting braking means adapted to arrest rotation of the spindle, a lever normally con-- trolling and adapted to allow said braking means to become operative, an arm'subject to the influenceof the running yarn, a spring controlling said arm, and connections between said arm and the lever whereby when said arm is moved by undue tension on the yarn the spring imparts further movementthereto to operate the lever for allowing the braking means to act.

7. In a yarn winding machine of the type wherein a vertical bobbin spindle is rotated by frictional driving means, a stop motion mechanism comprising automatically acting braking means adapted to arrest rotation of the spindle, a lever normally controlling and adapted to allow the braking means to become operative, an arm subject to the influence of therunningyarn, a spring controlling said arm, a movable knot detector controlling said spring, and connections between said arm and the lever whereby upon the arm being moved by undue tension on the yarn or as a result oi. loss of control by the spring due to the release'ot the latter by the knot detector, the lever willbe actuated by the connections to allow the braking means to act.

8. In a yarn winding machine of the type wherein a vertical bobbinspindle is rotated by the contact of a disc thereon with a driving wheel, a stop motionmechanism com prising a stationary brake pad adjacent one side of the disc, a pivoted detent having a cam-shaped end adjacent the oppositeside of said disc, a spring to move said detent so that the cam-shaped end thereof engages said disc and moves'itfrom contactwith the driving wheel and into engagement with the brake pad, a spring controlled lever to engage the detent and hold it in an inoperative position, a device subjected to the influence of the running yarn, and connections between said device and the lever.

9; In a yarn winding machine: of the type wherein a vertical bobbin spindle is rotated by the contact of a disc thereon with a driving wheel, a stop motion mechanism comprising braking means operating automatically to arrest rotation of the spindle,

ll l) operate said lever whereupon the braking means become operative independently ot.

the lever, end a hand lever to operate said lever for rendering the braking means operative independently of the yarn actuated V V I the driving Wheel and into engagement connections, I r r V 1.0. In a yarn vindingmachine of the type wherein a vertical bobbin spindle is rotated by frictional driving means, a stop motion mechanism comprising braking); meansoperating automatically to arrest rctation of the spindle, a lever to normally hold said braking means in an inoperative position, y arn actuated connections to actnate said lever to put said braking means in to action, and a hand lever adapted when moved in one direction to actuate the lever to render the braking means operative end when moved in the opposite direction, to return said lever to the normal position.

11. In a yarn Winding machine of the ty "1e wherein avertical bobbin spindle 1s rotatedhy the contact of a disc'thereon with a driving Wheel, a stop motion fmechanism V 7 comprising a 'fixed' brakefpad on one side said detent into contact ithsaidklisc V Whereby'it shifts the disc from contact with with the brake pad to arrestrotationof the spindle; a lever to engage the detent and normally hold it OlltOf act1on,a device subjected-to the influence of the nniningiyarn connections between said'device and the lever -for moving'the latter toreleese thede tent when abnormal yarn tension occurs,

and manually operable member movable in one dlrection to disengagethe lever from thedetent and movable in another direction reengage it vith tlie lever. V In testimony hereof'I' affix my signa ture. 1

o' return the detent to normalposition and JOHN JAM s'oAN oN; 

